#include <stdio.h>

void main()
{
  // *: 取值操作符
  // &：取址操作符
  int a, b;
  int *pointer_1, *pointer_2;

  a = 100;
  b = 10;
  pointer_1 = &a;
  pointer_2 = &b;
  printf("%d, %d\n", a, b);
  printf("%d, %d\n", *pointer_1, *pointer_2);
  printf("%d, %d\n", pointer_1, pointer_2);
}